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Related Experiment Video

Updated: Jan 7, 2026

Simple and Robust in vivo and in vitro Approach for Studying Virus Assembly

Simple and Robust in vivo and in vitro Approach for Studying Virus Assembly

Published on: March 1, 2012

An Assembly-Line Mechanism for In Vitro Encapsulation of Fragmented Cargo in Virus-Like Particles.

Ayesha Amjad¹, Irina B Tsvetkova^1,2, Lena G Lowry¹

¹Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States.

|December 29, 2025

Summary

This summary is machine-generated.

Virus shells can encapsulate multiple nanoparticles, forming virus-like particles (VLPs) through a novel staged assembly process. This discovery offers new possibilities for biotechnology and drug delivery applications.

Keywords:

assembly mechanism encapsulation multiple cargo virus-like particles

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Related Experiment Videos

Last Updated: Jan 7, 2026

Simple and Robust in vivo and in vitro Approach for Studying Virus Assembly

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Published on: March 1, 2012

Rapid Encapsulation of Reconstituted Cytoskeleton Inside Giant Unilamellar Vesicles

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Published on: November 10, 2021

Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro

Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro

Published on: April 8, 2020

Area of Science:

Biotechnology and Nanomaterials Science
Structural Biology and Virology

Background:

Virus shells are versatile tools in biotechnology for encapsulating diverse cargoes like siRNAs and enzymes.
Encapsulating multiple, charged nanoparticles within virus shells presents challenges due to cargo repulsion.

Purpose of the Study:

To investigate the spontaneous encapsulation of multiple, charged, small nanoparticles within brome mosaic virus (BMV) protein cages.
To elucidate the assembly pathway and structural characteristics of virus-like particles (VLPs) formed with nanoparticle cargo.

Main Methods:

Utilized electron microscopy, liquid atomic force microscopy, and cryoelectron tomography to study VLP assembly.
Analyzed nanoparticle-BMV protein intermediates to identify the encapsulation pathway.

Main Results:

Achieved spontaneous encapsulation of multiple, repelling nanoparticles within BMV protein cages.
Identified a staged, "assembly line" pathway for multiple cargo encapsulation, distinct from known VLP assembly mechanisms.
Observed pronounced nanoparticle size selectivity during the encapsulation process.

Conclusions:

The study reveals a novel, multi-stage assembly mechanism for creating virus-like particles with multiple nanoparticle cargoes.
The findings are significant for advancing drug delivery applications and developing new biomaterials.
The observed size selectivity has implications for controlled cargo loading in biotechnological applications.